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OpenStudy (anonymous):
Solve. 3x2 = -15x + 21
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OpenStudy (anonymous):
3x^2 = -15x + 21 x^2=-5x+7 x^2-7+5x=0 \[x=\frac{ -5\pm \sqrt{53} }{ 2 }\]
OpenStudy (anonymous):
thank you so much!
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